Home / 1,308,873.09-1,805,638.62-765,031.80

Finding the Fourth Proportional to 1,308,873.09, 1,805,638.62 and 765,031.80

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Solution

The fourth proportional to 1,308,873.09, 1,805,638.62 and 765,031.80 is: 1,055,389.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308,873.09 : 1,805,638.62 = 765,031.80 : x
  2. Step 2: Convert to fraction form
    1,308,873.09/1,805,638.62 = 765,031.80/x
  3. Step 3: Cross multiply
    1,308,873.09x = 1,805,638.62 × 765,031.80
  4. Step 4: Simplify right side
    1,308,873.09x = 1,381,370,963,608.12
  5. Step 5: Solve for x
    x = 1,381,370,963,608.12/1,308,873.09
  6. Step 6: Final answer
    x = 1,055,389.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.